Product DescriptionThe Battle Arms Development WORKHORSE complete upper receiver is built around a forged 7075-T6 aircraft-grade aluminum upper and a free-float handguard designed for hard use and consistent accuracy. The free-float rail provides M-LOK attachment points at the 3, 6, and 9 o'clock positions and a full-length Picatinny rail at 12 o'clock with a signature notch cut that aligns with the upper receiver. A 16-inch 4150 chrome-moly steel barrel with a black nitride finish is paired with a head-spaced 9310 steel bolt and an 8620 black nitride carrier for durability, reliability, and easier cleaning. This complete upper includes an ambidextrous Bad Rack-15 charging handle and an AR-15/M16 bolt carrier group, making it a ready-to-run upgrade for compatible builds.Product HighlightsForged WORKHORSE 7075-T6 aircraft-grade aluminum upper receiver for strength and long service life16-inch 4150 chrome-moly steel barrel with black nitride finish for durability and corrosion resistanceFree-float M-LOK handguard with 3/6/9 o'clock mounting plus full-length Picatinny top railIncludes Bad Rack-15 ambidextrous charging handle for left- or right-handed manipulationHead-spaced bolt carrier group with 9310 steel bolt and 8620 nitride carrier for reliability and easier cleaningSpecsBrand: Battle Arms DevelopmentManufacturer Part Number: WH-UR16B-Y-15UPC: 810033786150Product Type: Complete upper receiverBarrel Length: 16 inBarrel Material: 4150 chrome-moly steelBarrel Finish: Black nitrideUpper Receiver Material: 7075-T6 aircraft-grade aluminum (forged)Handguard: Free-float M-LOK with attachment points at 3, 6, and 9 o'clockTop Rail: Full-length Picatinny rail at 12 o'clockCharging Handle: Bad Rack-15 ambidextrous (included)Bolt: 9310 steelCarrier: 8620 steel, black nitrideColor/Finish: Black anodizedDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.